A little extra information that'll probably be helpful, watering them pretty regular, especially when I noticed the leaves had started curling, using the Foilage Pro fertilizer, a little heavy handed with the scoop, since my post (3 hrs ago) the leaf with the brown spots dropped and few others that were yellowing

Meyers are particularly sensitive to light change. If you brought it inside from a sunny spot outside without gradually doing so, it will probably completely defoliate and lose all of its leaves in order to make new leaves better suited to the low light conditions of indoors. You can do a search on the forum for bringing Meyers indoors gradually, there are probably 50-75 threads on this subject alone because it is brought up so often. Hope this helps.

Evan

They were given roughly 3 weeks of shade and have been in the house since October (I think) first three weeks I didn't have grow lights, they've been under the grow lights for roughly a month

What kind of potting medium is it in? Just curious why your blinds are closed if there is sunlight available? How often are you watering?

Evan

Both are just in regular soil, I know it's not as good as the 5-1-1 mix, but every discussion on that confused me and I didn't want to mess it up

Blinds are closed because... well, they're front facing windows and I do not wear clothing often at home lol

Watering whenever I noticed the dirt is dry or the leaves are curling, so around every 3-4 days, and there's fertilizer in the watering can, so every watering has fertilizer in it

Lol...You should grow a fig tree so you could wear a fig leaf while the trees bask in the sunlight uninhibited...Fig trees need no light at all until spring..Much easier to grow..You made my morning.

All kidding aside, if you let your trees leaves wilt before you water, it will shed leaves very fast within a day..It will die if done more than once. I have a feeling you are dealing with unhealthy roots that have stopped taking up moisture combined with what ever sunlight you get from that window..Have you tugged at the greener leaves on the other side? Do they come off? Are the flat and green or do they look curled a bit?

I sure would cut back on the fertilizer under those kinds of conditions!

I usually don't let them wilt/curl up, but it does happen on occasion.. as far as sunlight, they have the grow lights on them, and have been doing for a while, but starting yesterday I have opened the blinds up to let them get sun, greener leaves don't come off easily.

As far as curling/curving, some are flat, some curve slightly downward, and some curve slightly upward, but there are quite a few leaves that droop down from front to back.

I think I'll focus on getting them more light, and less fertilizer, in the back of my head I was kind of thinking the fertilizer might be part of the problem, I only got it in November, before that I used the fish poo, but they hadn't had any in months, so I was probably overfeeding to make up for it lol

I found my meyer wasn't as sensitive to light change as much as it's root ball inside. As much as people promote free draining, I overdid it last year. My Meyer dropped 60% of it's leaves and kept the ones it could support with it's limited root ball; my mistake for underpotting it in a loose soil mix. Last year I had a lot of trouble with my gritty mix citrus (lost most of the small ones), so this year I'm transitioning to a 5-1-1 mix with more decomposed parts for larger plants with more leaves and so far only the meyer has dropped any leaves. My $.02 but I'm still learning!

They've been in the same soil for going on 2.5 years or so, after the first 6 months we moved them from the tiny pots from HD to bigger ones, the pots they came in were maybe 6" in diameter and the new ones are 14"

2.5 years is way too long for a mix with fine components, with let's say PEAT MOSS.

If you are going to use that kind of mix, I would only pot one size bigger than the root ball each year and make sure to re pot each year never letting the mix get compacted or collect salt deposits from your tap or fertilizer..

Well, I finally determined what happened, I mentioned that the OTHER
tree had been dug into by the cats, except it wasn't the other tree,
they dug into the one that was losing leaves, I pulled the trees out and
swept everything up and put them back, but they swapped locations...
now they've dug into the other tree :/

So I guess I'm gonna have to look into chicken wire or something lol

As far as repotting, would doing it during winter or the start of spring be best?